1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376836a0745b8eb1ed0ae4b0a795b1db0a39f9a0199b2d169e30ec7e87fdc436. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/714bc450-9daa-44a7-9085-88cbc9b7aa57.json and https://artists.proofprofile.net/proofs/artist/714bc450-9daa-44a7-9085-88cbc9b7aa57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6bff67fd743caef148c9f883fb53abda44ca5b92225ffb5c0c7d9d7d87433e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3JJ2100526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bcda89939515dbeef7aac43f51b5fd6313d3db334999ef24849301a8bff2f2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3JJ2100527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05aee14053b02be3035aa38a80af0fc93d887b0460e767e4bdd93eba80a4dd4c. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3JJ2100528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db3b282c587f7741bf6b5acda1fd129560481a8a73f9aff1e0a7ffa06182e17. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3JJ2100529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80931f7ebc82f54cea6be674785d8b7e1690d5f5aa7cd6d9fde8f039fcc632b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3JJ2100530.
The Door (A Place to Bury Strangers Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676c48818ee1085b73cd11b75e1d6cf9da409e3dcb0ab8e2a0f570d4ffc32abb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:49:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN4Z2000253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf102062160a7ce3f01aa1958af36cd75fed0d342332c5e1e1827e5d7ea489d23. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN4Z2000254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec317d71acf4354ffc95950bf10eef657383508a3a369032eac9fe3eb1fb1f65. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:49:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN4Z2000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f692089b7e1214fe9d77b4c1cf844ff08be217760e9facf3c1419f52c272e9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:20:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN4Z2000257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cef9c52b39021cc0e22e82b64554e02b4b0186584b4c0ac4225a483843db9e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN4Z2000258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7168e7cdd8de812b9d0509fd08b608b430c0abbfda343e07ed22b7aa141d0be6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN4Z2000260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e50c4113bee5cb556cb3bf04e44e8645ac243ee91c57f35fca4fe1018e2bcf5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN4Z2000261.